178990-25-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 178990-25-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,8,9,9 and 0 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 178990-25:
(8*1)+(7*7)+(6*8)+(5*9)+(4*9)+(3*0)+(2*2)+(1*5)=195
195 % 10 = 5
So 178990-25-5 is a valid CAS Registry Number.